Question
Question 2 You measure the duration of how long each of your friends can dance without having to take a break. You and find an
Question 2
You measure the duration of how long each of your friends can dance without having to take a break. You and find an instrumental uncertainty of 1 seconds and a statistical uncertainty of 20 seconds. What do you do next?
A get friends that are better at dancing
B get a better instrument
C take more data
D design a better experiment
Question 3
Given the equation y =mx, if y has units of kg meters/seconds, x has units of meters squared, what units must m have?
A seconds
B kg/(meters *seconds)
C kg/seconds
D kg meters/seconds
Question 5
You measure 10trails of the time it takes a snail to travel 2 cm.You find the average and the standard deviation of these trials.What are the units on the standard deviation?
A cm^2/counts
B cm
C counts/cm
D cm/counts
Question 6
- Find the uncertainty in a calculated average speed from the measurements of distance and time. Average speed depends on distance and timeaccording to this function v(t,x) =x/t. Your measured distance and time have the following values and uncertaintiesx = 7.9 meters,Delta X=0.6 meters and t = 5.2 seconds and Delta t=2.5 seconds. What is the uncertainty in the average speed,Delta V? Units are not needed in your answer
Question 7
- Find the uncertainty in a calculated average speed from the measurements of distance and time. Average speed depends on distance and timeaccording to this function v(t,x) =x/t. Your measured distance and time have the following values and uncertaintiesx = 2.1 meters,Delta X=1.7 meters and t = 6 seconds andDelta t=0.2 seconds. What is the uncertainty in the average speed,Delta V? Units are not needed in your answer.
Question 8
- Find the uncertainty in a calculated electrical potential difference from the measurements of current and resistance.Electric potential difference depends on current and resistance according to this function V(I,R) =IR. Your measured current and resistancehave the following values and uncertaintiesI= 9.5Amps,Delta I=0.2 Amps and R= 35.1Ohms andDelta R=0.3Ohms. What is the uncertainty in the ,Delta V? Units are not needed in your answer
Question 9
- Find the uncertainty in a calculated average speed from the measurements of distance and time. Average speed depends on distance and timeaccording to this function v(t,x) =x/t. Your measured distance and time have the following values and uncertaintiesx = 8.6 meters,Delta X=2.7 meters and t = 4.8 seconds and Delta t=1.4 seconds. What is the uncertainty in the average speed,Delta V? Units are not needed in your answer.
Question 10
- Find the uncertainty in a calculated electrical potential difference from the measurements of current and resistance.Electric potential difference depends on current and resistance according to this function V(I,R) =IR. Your measured current and resistancehave the following values and uncertaintiesI= 5.1Amps,Delta I=0.3 Amps and R= 77.5Ohms andDelta R=0.4Ohms. What is the uncertainty in the ,Delta V? Units are not needed in your answer.
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